Residential Roofing: Costs, Lifespan and Alternatives

Financial District sits in San Francisco County and takes long dry heat, hard thermal cycling and rain that arrives in a few concentrated storms. In practice that means asphalt dries out and sealant pulls back from penetrations years before the field wears through.

In inland conditions, composition shingle runs roughly fifteen to twenty-five years, tile underlayment twenty to twenty-five, and coatings seven to fifteen depending on the system.

Pitch and exposure decide it before appearance does. Given inland conditions in Financial District, reflective coverings and real attic ventilation make the biggest difference.

Check the licence, liability cover and workers' compensation, then ask any Financial District contractor what happens if the deck is worse than expected — and get that answer in writing before the covering comes off.

One to three days on a typical Financial District property, depending on size, pitch and how much deck needs replacing. Nothing is left open overnight.

About 339 miles from our Santa Monica yard, so work in Financial District is planned as a scheduled trip rather than a same-day call, with planned work booked around the weather.

We start at the flashings, check the deck from inside the attic, and photograph every elevation. On a Financial District property we pay particular attention to dried-out underlayment and attic temperature.

Yes. Low-slope sections on Financial District buildings need a membrane or coating system rather than shingle laid flatter than it is rated for, and they are quoted separately from the pitched roof.